The Toronto-Dominion Bank
Secure management and provisioning of interaction data using permissioned distributed ledgers

Abstract:

The disclosed exemplary embodiments include computer-implemented systems, apparatuses, and processes that securely track, manage, and provision elements of interaction data within a computing environment in accordance with encrypted permissioning data recorded onto a permissioned distributed ledger. For example, an apparatus may obtain query data that includes an identifier of a computing system and a query term, and access one or more ledger blocks of a permissioned distributed ledger that include encrypted permissioning data and interaction data. The apparatus may decrypt the encrypted permissioning data using a master cryptographic key of a centralized authority. Based on a portion of the decrypted permissioning data associated with the identifier, the apparatus may determine that a portion of the interaction data is associated with the query term and consistent with an access permission of the computing system, and transmit response data to the computing system that includes the portion of the interaction data.